Objective: Differentiating between scrap objects that could be left in the ground and hazardous objects that must be removed is a major problem in the remediation of unexploded ordnance (UXO) from former military sites. The extremely high cost of site remediation may be vastly reduced by discriminating the scrap from the UXO. Over the past few years, much progress has been made in utilizing arrays of electromagnetic induction (EMI) instruments to obtain more detailed information (e.g., object size) about an anomalous conducting object. No instruments that can measure such parameters, however, are commercially available. The objective of this project is to develop and demonstrate an instrument, Metal Mapper, capable of estimating detailed parameters about the objects being sensed and acquiring simultaneous magnetometer and EMI data. Technology Description: This project will select and integrate the most promising aspects of two UXO detection and classification systems currently being developed. Both are time-domain electromagnetic (TEM) systems, and one includes the dual-mode capability. The Advanced Ordnance Locator (AOL) system is being developed through funding from the Naval Explosive Ordnance Disposal Technology Division. The AOL system uses a single horizontal transmitting loop, nine three-axis receiver sensors (27 channels of data), a novel transmitter circuit, and a gradiometer magnetometer. Recent tests of this system have shown outstanding performance. The Lawrence Berkeley Laboratory (LBL) system is being developed under ESTCP project MM-0437. The LBL system uses a three-loop transmitter, eight single-axis receiver sensors (8 channels of data), a conventional half-sine-wave transmitter, and a data acquisition system designed from the outset for use in the field. Expected Benefits: In its most recent report on UXO, the Defense Science Board observes that introducing survey technology that reduces the false alarm rate and improves the probability of detection can significantly affect the overall cost of site remediation. The benefit of this project will be to provide a commercial source for an instrument that will substantially improve the quality of UXO surveys and will correspondingly reduce costs. The instrument and its software will provide improvements for detection surveys (UXO mapping or raw dig lists) and for characterization surveys (single target classification and false alarm elimination). (Anticipated Project Completion - 2008) Principal Investigator: Dr. Mark Prouty Geometrics, Inc. 2190 Fortune Drive San Jose, CA 95131 Telephone: (408) 954-0522 Fax: (408) 954-0902 E-mail: markp@mail.geometrics.com DoD Liaison: Mr. Hollis Bennett U.S. Army Corps of Engineers Engineer Research and Development Center ATTN: ERDC EE-C 3909 Halls Ferry Road Vicksburg, MS 39180-6199 Telephone: (601) 634-3924 Fax: (601) 634-2854 E-mail: jay.bennett@erdc.usace.army.mil | 
